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7534324 |
Felt and equipment surface conditioner
Deposition of contamination by deposits of resinous material on paper making equipment is undesirable. This invention prevents or retards such contamination by treating the equipment, especially...
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7501041 |
Bleached, mechanical paper pulp and the production method therefor
This invention relates to bleached mechanical paper pulps, based on fibrillated fibres of cellulose, hemicelluloses and lignin, containing calcium carbonate, in which calcium carbonate is...
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7452445 |
Non-woody fiber mulching mat and production method thereof
A liquid fiber mulching mat of a non-woody fiber and the production method thereof are disclosed. The production method of a liquid fiber mulching mat for a non-woody fiber includes steps of...
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7427300 |
Hydrophilic finish for fibrous substrates
This invention is directed to fabric finishes or treatment preparations for nylon, polyester, and other textile and fibrous substrate materials that will render them hydrophilic. The finishes of...
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7390378 |
Method of curling fiber and absorbent sheet containing same
A method of providing papermaking fibers with durable curl comprising: a) introducing papermaking fiber into a rotatable drum adapted for operation at elevated pressure; b) rotating the drum...
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7384504 |
Light-stable and process-stable lignocellulosic materials and their production
A novel method for the production of light-stable and process-stable lignocellulosic materials, in particular, the production of mechanical wood pulps with much improved light and process stability...
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7377993 |
Methods for reducing fluorescence in pulp and paper
Methods for reducing, and in some cases eliminating, fluorescence in pulp and paper, as well as the resulting articles, are provided. The methods destroy fluorescent activity of agents (e.g.,...
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7368036 |
Xylanase treatment of chemical pulp
The present invention discloses methods of bleaching chemical pulp that use xylanase enzymes after chemical bleaching. The method comprises the steps of carrying out a chlorine dioxide stage to...
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7300546 |
Cellulose fiber having improved biostability and the resulting products
A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to...
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7297230 |
Method for producing cellulose fiber having improved biostability and the resulting products
A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to...
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7297224 |
Method of deinking waste paper using cellulase without lowering paper strength and method of evaluating the same
A deinking method using a cellulase which enables the load upon the environment to be reduced; and an evaluation method whereby a cellulase effective in deinking and the effective addition level of...
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7294228 |
Biopulp for non-woody fiber plants and biopulping method thereof
The present invention relates to a biopulping method, and more particularly to a biopulping method for non-woody fiber plants. A biopulping method for a non-woody fiber plant is provided. It...
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7288167 |
Cross-linked pulp sheet
The invention provides a method for preparing cross-linked cellulosic fibers. A sheet of mercerized cellulosic fibers with a purity of at least 95% is treated with a solution containing a...
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7285181 |
Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds
A method for the bleaching and brightness stabilization of lignocellulosic materials is described. The method involves the treatment of lignocellulosic materials, in particular, (a) wood pulps such...
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7214292 |
Addition of THP or THP+ salt to pulping liquors to destroy catalase and/or catalase producing bacteria
Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis...
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7214291 |
Method for the modification of cellulose fibres
The invention relates to a method for the modification of cellulose fiber with the object of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is...
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7198695 |
Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method
The invention relates to a method for separating hemicelluloses from a biomass containing hemicelluloses. The method includes the steps of: a) extracting the hemicelluloses from the biomass...
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7186316 |
Method for preparing pulp from cornstalk
Disclosed is a method for preparing paper pulp from cornstalks comprising the steps of cooking, washing, screening, thickening, bleaching, beating and drying performed under moderate conditions...
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7138035 |
Process for the selective modification of carbohydrates by peroxidase catalyzed oxidation
The present invention relates to an environmentally friendly process for the selective oxidation of carbohydrates. The process comprises the addition of a hydroperoxide, including hydrogen...
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7097738 |
Process for producing pulp
The invention relates to a process for producing pulp from a fibre-based raw material using, as the cooking reagent, a solvent mixture which is based on organic acids and also contains furfural....
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7097737 |
Method of making a modified unbleached pulp for lyocell products
In accordance with the present invention, lyocell products can be made with unbleached pulps resulting in products with high amounts of hemicellulose and high amounts of lignin as compared to...
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7094318 |
Chemically cross-linked cellulosic fiber and method of making same
The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is...
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7081183 |
Method of deresinating pulp using alkyl alcohol alkoxylate surfactants
This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an...
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7074301 |
Chemically cross-linked cellulose fiber and method of making same
The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is...
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7067244 |
Rapid triglyceride assay for use in pulp pitch control
Enzymatic methods are provided for determining the surface triglycerides content in a sample of wood pulp. The methods preferably comprise reacting triglycerides which are present on the surface of...
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7056418 |
Cooking method for pulp
A lignocellulose material is cooked by means of an alkaline cooking liquor containing polysulfides in the presence of a quinone-hydroquinone compound, of which the oxidation-reduction potential in...
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7018510 |
Process for bio-bleaching of Kraft pulp using bacterial consortia
The present invention relates to an environment friendly, safe, and efficient four-step method of bio-bleaching Kraft pulp using bacterial strains of accession no. MTCC 5096, MTCC 5094, MTCC 5095,...
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7008505 |
Eucalyptus biomechanical pulping process
In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with aliving culture of one or more white rot fungi. The fungi propagate...
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6942754 |
Process for producing xylooligosaccharide from lignocellulose pulp
Xylooligosaccharide is produced from a lignocellulose pulp by enzyme-treating a lignocellulose pulp with hemicellulase, filtering the resultant reaction mixture to separate a liquid fraction from...
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6939437 |
Paper making processes using enzyme and polymer combinations
Methods of making paper or paperboard are described. In one method, at least one cellulytic enzyme composition and at least one cationic polymer composition are introduced to a paper making pulp at...
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6923887 |
Method for hydrogen peroxide bleaching of pulp using an organic solvent in the bleaching medium
Disclosed is a method for pulp bleaching. The method comprises the steps of providing a pulp sample for bleaching, the pulp sample stemming from a pulp producing process, providing a bleaching...
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6833187 |
Unbleached pulp for lyocell products
In accordance with the present invention, lyocell products can be made with unbleached pulps resulting in products with high amounts of hemicellulose and high amounts of lignin as compared to...
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6830655 |
Method of modifying a xylan-containing carbohydrate substrate having hexenuronic acid groups attached to the xylan
The present invention concerns a method for enzymatic treatment of lignocellulosic materials which contain xylan-polymers, such as cellulose kraft pulps. According to a method of the present kind,...
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6824646 |
Process for oxygen bleaching and enzyme treating lignocellulosic pulp with liquid treatment and recovery
Lignocellulose pulp is bleached by bleaching a pulp in aqueous alkali solution with oxygen and treating the pulp with a hemicellulase, while a liquid fraction delivered from the enzyme treatment...
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6821383 |
Preparation of modified fluff pulp, fluff pulp products and use thereof
This invention relates to a method of producing modified fluff pulp comprising treating cellulose pulp with a nitroxide-mediated oxidation method and fluffing the treated cellulose pulp. The...
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6808595 |
Soft paper products with low lint and slough
A paper product containing hardwood fibers that are treated with certain hydrolytic enzymes, such as endo-glucanases, is provided. Moreover, the paper product includes other types of fibers, such...
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6790527 |
Lyocell fiber from unbleached pulp
In accordance with the present invention, lyocell products can be made with unbleached pulps resulting in products with high amounts of hemicellulose and high amounts of lignin as compared to...
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6777103 |
Fiber cement composite material using biocide treated durable cellulose fibers
A fiber cement composite material providing improved rot resistance and durability, the composite material incorporating biocide treated fibrous pulps to resist microorganism attacks. The biocide...
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6773546 |
Black liquor removed from pulp
Pulp, containing black liquor, is separated to produce pulp substantially free of black liquor. An organic solvent forms a layer within a vessel and adding a pulp containing black liquor will...
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6770168 |
Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals
A substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals is carried out on in several stages involving...
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6761944 |
Moulded articles of cellulose hydrate with enzymatically modified surface
The invention relates to a process for the treatment, in particular for the roughening, of the surface of hydrated cellulose shaped articles, in which at least one cellulase is allowed to act on...
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6740199 |
Process for digesting woodchips with a sultaine and a polyglycoside
The invention relates to a process for digesting woodchips used in papermaking. The process employs digester additive, which comprises a sultaine or mixtures of a sultaine with a nonionic...
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6719906 |
Process for the preparation of solutions of anionic organic compounds
A process for the preparation of concentrated solutions or suspensions of anionic organic compounds is described, which process comprises a) acidifying an aqueous solution or dispersion of an...
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6719880 |
Process for producing paper and absorbent products of increased strength
A process for producing paper and absorbent products of increased strength includes extracting wood particulates with a solvent selected from methanol, ethanol, and acetone at a pressure less than...
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6706144 |
Method of dewatering pulp
A method of dewatering an aqueous cellulosic pulp slurry comprising adding to an aqueous slurry of washed cellulosic pulp an effective dewatering amount of a mixture of one or more nonionic...
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6685748 |
Enzymatic bleaching of natural non-cotton cellulosic fibers
A method is provided for bleaching a non-cotton cellulosic fiber, yarn or fabric by contacting said fiber, yarn or fabric with a hemicellulase enzyme for a time and under conditions suitable to...
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6669863 |
Anionic cellulose ethers having temperature-dependent associative properties
An anionic cellulose ether obtainable by a process comprising reacting an alkali metal cellulose with one or more reagents A selected from the group consisting of haloacetic acids, alkali metal...
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6666950 |
Process for deinking paper using a triglyceride
A method is provided for deinking paper. Repulped paper is treated with a deinking comprising a triglyceride. A preferred triglyceride is beef tallow. The deinking composition reduces foaming and...
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6660128 |
Oxidase process for pulp
A method for selectively delignifying lignocellulosic materials and bleaching of pulp and dyes using a combination of an oxidative enzyme and a metal complex. More specifically, the process...
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6649023 |
Process for digesting woodchips and digester additives
The invention relates to a process for digesting woodchips used in papermaking. The process employs a digester additive, which is a mixture of (a) a polyglycoside, and (b) a polyoxyalkylene glycol....
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